:root {
  --bg-color: #0a0a0c;
  --card-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.6);
  --accent-color: #4f46e5;
  --accent-glow: rgba(79, 70, 229, 0.4);
  --success-color: #10b981;
  --danger-color: #ef4444;
  --font-main: "Outfit", sans-serif;
  --font-mono: "JetBrains Mono", monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-main);
  overflow-x: hidden;
  min-height: 100vh;
}

/* 动态渐变背景 */
.bg-gradient {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: radial-gradient(
      circle at 20% 20%,
      rgba(79, 70, 229, 0.15) 0%,
      transparent 40%
    ),
    radial-gradient(
      circle at 80% 80%,
      rgba(16, 185, 129, 0.1) 0%,
      transparent 40%
    );
  filter: blur(80px);
}

.app-container {
  max-width: 480px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header 样式 */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.5px;
}

.logo h1 span {
  color: var(--text-secondary);
  font-weight: 300;
  margin-left: 4px;
}

.global-timer {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

#timer-text {
  position: absolute;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--accent-color);
  font-weight: bold;
}

.progress-ring__circle {
  transition: stroke-dashoffset 0.1s linear;
  transform: rotate(-90deg);
  transform-origin: 50% 50%;
}

/* 列表项样式 */
main {
  flex: 1;
}

.auth-card {
  background: var(--card-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 1.5rem;
  padding: 1.5rem;
  margin-bottom: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: transform 0.2s, box-shadow 0.2s;
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.auth-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  border-color: rgba(255, 255, 255, 0.2);
}

.auth-card:active {
  transform: scale(0.98);
}

.auth-info {
  flex: 1;
}

.auth-account {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.quick-tag {
  background: var(--accent-glow);
  color: #818cf8;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: bold;
  border: 1px solid rgba(129, 140, 248, 0.3);
}

.auth-code {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-primary);
}

.auth-code.fade {
  opacity: 0.4;
}

.copy-hint {
  font-size: 0.75rem;
  color: var(--accent-color);
  opacity: 0;
  transition: opacity 0.2s;
}

.auth-card:hover .copy-hint {
  opacity: 1;
}

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-secondary);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: 0.5;
}

/* 按钮样式 */
.primary-btn {
  background: var(--accent-color);
  color: white;
  border: none;
  padding: 0.8rem 1.5rem;
  border-radius: 1rem;
  font-family: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  box-shadow: 0 4px 12px var(--accent-glow);
}

.primary-btn:hover {
  background: #4338ca;
  transform: translateY(-1px);
}

.secondary-btn {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  padding: 0.8rem 1.5rem;
  border-radius: 1rem;
  font-family: inherit;
  cursor: pointer;
  transition: background 0.2s;
}

.secondary-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.fab {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 50%;
  background: var(--accent-color);
  color: white;
  border: none;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 8px 32px var(--accent-glow);
  cursor: pointer;
  transition: transform 0.2s, background 0.2s;
  z-index: 10;
}

.fab:hover {
  transform: scale(1.1) rotate(90deg);
}

/* 模态框样式 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 100;
  padding: 1.5rem;
}

.modal-overlay.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

.modal-content {
  background: #16161a;
  width: 100%;
  max-width: 400px;
  border-radius: 2rem;
  padding: 2rem;
  border: 1px solid var(--glass-border);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
}

.modal-content h2 {
  margin-bottom: 1.5rem;
  font-size: 1.25rem;
}

.input-group {
  margin-bottom: 1.25rem;
}

.input-group label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.input-group input {
  width: 100%;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--glass-border);
  padding: 1rem;
  border-radius: 1rem;
  color: white;
  font-family: inherit;
  font-size: 1rem;
  transition: border-color 0.2s;
}

.input-group input:focus {
  outline: none;
  border-color: var(--accent-color);
}

.modal-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 2rem;
}

.delete-btn {
  background: none;
  border: none;
  color: var(--danger-color);
  cursor: pointer;
  font-size: 0.75rem;
  opacity: 0.5;
  transition: opacity 0.2s;
}

.delete-btn:hover {
  opacity: 1;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 移动端优化 */
@media (max-width: 480px) {
  .app-container {
    padding: 1rem;
  }
  .auth-code {
    font-size: 1.75rem;
  }
}